Sewer inlet



June 16, 1931.

y E. H. PAFFRATH SEWER INLET Filed 001.. 19. 1929 2 Sheets-Sheet l Patented June" 16, 1931 srarss f nannsr'ii; rarrnarii, orsrjnools, Missounr SEWER INLET application mea somber 19, 1929. lserial No. 400,787,

)This'invention relates generallyto sewer inlets and vmore specifically to concrete sewer inlets of sectional form, the predominant objectoffthe invention, beingto provide a 5 sewer inlet comprised of aplurality ofsec l tions formed of concretev or similar jmaterial which may be assembled within a sewer opening to provide a concrete sewer inlet of great durability. l Y I `Figure V1 is a plan viewof my improved .sewerinlet.- l l v j l e Figure 2 is a vertical section taken on line 2-2ofFigure1..` 'n Figure Bris a crossl sectiontaken on line 3-32 of Figure 2.

Y Figure 4 isa cross section taken on line 4 4 of Figure 2.-

Figure 5 is a fragmentary section taken on line 5-5 of Figure 3'.'l y y v A In the drawings;y wherein is shown for the purpose of illustration, merely,"one emb0diment of the invention A designates my improved sewer inlet, which comprises a bot-l tomimember 1 formed of concrete or `similar 5 material,y said bottom member preferably be? ing round in plan and being provided in its top face with amarginal recess 2 the inner wallof which serves asan annular shoulderA 3 (Figure .2). Supported upon the bottom member l is a lower cylindrical inletportion 4 whichcomprises a pair of semi-cylindrical .elements 5 and 6 (Figure 4) formediof con'-v cretc or similar'materialr The lower cylindrical portion 4 is seated at its lower end 1n of the bottom member l, and the inner face of said cylindrical portion contacts with ythe annular shoulder 3 at the inner end of said recess. The semi-cylindrical elements 5 and 6 are joined together along'- the contacting Y edges 7 of said'elements (Figure 4) by means of suitable bonding material such as stift' mortar, and to facilitate the making of a secure joint between said elements at these points I provide each thereof with a substantially V- shaped groove 8 which extends longitudinally of each edge 7 from end to end thereof. The V-shaped grooves 8 of the semi-cylindrical elements v5'and 6 are so positioned that the grooves of the associated semi-cylindrical elethe marginal recess 2 formed in the top face Y ments are brought into registration with each other when the elements 5 and 6 are assembled toproviderectangular openings as rshown in Figure 4'and these rectangular openings are filled with, bonding material when the elef ments `5 and 6 are secure'dtogether to provide a secure joint. hecylindrical portion 4 is also secured by suitable 'bonding materiall to the bottom member l. n

Disposed above the cylindrical portion 4 ofthe sewer, inletA and supported on the`upper edge Vthereof is an intermediate cylindrical portion-9. The cylindrical portion;9 is

constructed and arranged just as is thecylindrical portion 4; that is to say theportion) is comprised of a pair of semi-cylindrical elements l() and 11, and these elements are provided at their contacting edges with Vfshaped grooves which` providerectangular openings 12 in which bonding material is arranged to provide a secure joint'between the associated elements 10 and 1l. e

The `cyliridrical portion 9 at its lower edge is "secured by suitable bonding material to they upperedge ofthe cylindrical portion v4. 'Thevjoints between vtheelements 5 and -6 are offset horizontally with respect to thejoints between the elements 10 and'11. e Mounted on the upper Yedge-of the cylindrica-lxp'ortion 9 is the top member 13 of my asubstantially U-shaped member (Figure 8) Eachlofthe elements 14` and 15 includes a Vimproved structure, said top member com'- f prisingajpair of elements 14'and 15 which 'areso associated with each other as to providel straight portion 1'6 anda curved portion 1 7, p

and atl the contacting edges `18 of said elements',"each thereoffis' provided .with a subl e stantiallyV-,shaped groove, and these grooves j are combined when the sill is assembled to provide a rectangular opening 18 i'n'which suitable bonding material is arranged to provide a secure joint' between said elements 14 andl. The outer end of the porti'onl of each of the elements v14 and 15 isjprovided with la .recess 19 shaped to receivel a sill 20 eli (Figure i2), saidsill being eXtended'ac-,ross Y thefspace between the outer4 ends of thepporf tionsil of the respective elementsj14 and'l'. The sill 20 is secured inthe recesses 19: by suit-- able bonding material and as shown in Figures2 and 3 said sill at its approximate center rests upon a portion of the top edge of the cylindrical portion 9, to which top edge portion said sill is secured by bonding material.

Because of the difference in the cross-sectional shape between the top member 13 and the cylindrical portion 9, substantially tric angular shaped spaces 21 are present at opposite sides of the mouth portion of the top member 13 as shown by dotted lines in Figure 1. Such spaces7 of course, would be objectionable and I eliminate same by the use of substantially t-riangular shaped sections of material 22 which cover the spaces referred to. The sections of material22 rest upon p0rtions of the top edge of the cylindrical portion 9 and said sections of material are secured to the top edge of the cylindrical portion 9 the portions 16 of the elements 14 andk 15 of the top member 13 and the sill 20, by

` cap being securedin place by suitable bonding material andl being provided `with an opening 24 formed therethrough which is closed by a closure element 25.

The element 6 of the cylindrical portion 4 is provided with an aperture 26 formed through the wall thereof which received the end of a pipe 27 with which a trap 28 of ordinary design is associated, said trap being closed at one end thereof by a closure element 29 and connected at its other end by a pipe 30 to the sewer (not shown). It is obvic ous that a trap will not be associated with the sewer inlet in everycase, and when no trap is employed the aperture 26 will be omitted.

In the use of my improved sewer inlet the various parts. thereof, all of which, with the exception of the closure element 25 and the ,trap 28 and pipe 27, are formed of concrete or similar material, are taken to t-he location of the sewer inlet where said parts are assembled within the sewer opening in the ground to provide a concrete sewer inlet. The various elements ofwhich the sewer inlet is comprised are securely joined together by suitable bonding" material henceV what amounts to an integral structure is provided.

I claim: 1

1. A sewer inlet comprisingA a plurality of elements formed of concrete or similar material .including a substantially Y cylindrical inlet portion arranged within the sewer opening longitudinally thereof, said cylindrical inlet portionbeing comprised of a bottom, a lower cylindrical section, and an intermediatet cylindrical section, said lower cylindrical section and said intermediate cylindrical section being each formed of a plurality of semicylindrical elements secured to each other and to the elements of the associated cylindrical section to provide a unitary structure and a substantially U-shaped top member supported by said intermediate section at the top thereof, said top member being comprised of a plurality of elements secured together, and a sill which is in the form of a separate element secured in place in the structure of the top member and partially closes the open portion thereof.

2. A sewer inlet comprising a plurality of elements formed of concrete or similar material including a substantially cylindrical inlet portion arranged within the sewer opening longitudinally thereof, vsaid cylindrical inlet portion being comprised of a bottom, a lower cylindrical section and an intermediate cylindrical section, said lower and intermediate sections being each4 formed of a plurality of semi-cylindrical elements secured to each other andjto the elements of the associated cylindrical section to provide a unitary structure, a substantially U-shaped top member supported by andsecured to said intermediate cylindrical section at the top thereof, said top member being comprised of a plurality of elements Vsecured together, a sill secured to said top member, substantially triangular shaped elements arranged to close spaces between portions of said intermediate cylindrical section and said top member, an apertured top stone supported by said top member, and i a closure element for closing the aperture in said top stone. v

In ltestimony that I claim the foregoing I hereunto aliix my signature.

' ERNEST II. PAFFRATH.

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